From 8979d70a694f852c779b02a087962771cacae53e Mon Sep 17 00:00:00 2001
From: Urey <29945179@qq.com>
Date: Fri, 23 Sep 2016 17:00:31 +0800
Subject: Update ethernetif.c

if device->eth_rx is NULL ,rx thread will hard fault...
---
 components/net/lwip-1.4.1/src/netif/ethernetif.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'components/net')

diff --git a/components/net/lwip-1.4.1/src/netif/ethernetif.c b/components/net/lwip-1.4.1/src/netif/ethernetif.c
index f0b2f814dc..f0c28ecf06 100644
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@@ -367,6 +367,8 @@ static void eth_rx_thread_entry(void* parameter)
             /* receive all of buffer */
             while (1)
             {
+            	if(device->eth_rx == RT_NULL) break;
+            	
                 p = device->eth_rx(&(device->parent));
                 if (p != RT_NULL)
                 {
-- 
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